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What is a knife-edge ridge?

GeographyMountains

Quick Answer

A knife-edge ridge is a very narrow mountain crest with steep slopes on both sides. It often forms where glaciers erode adjacent valleys.

The Full Story

A knife-edge ridge, also called an arête in geology, is a sharp ridge separating two glacially carved valleys or cirques. Glaciers erode both sides of the divide, leaving behind a narrow, dramatic crest. These ridges can be dangerous to cross because they may have exposed rock, loose footing, and sudden drops. Famous mountain regions such as the Alps and the Himalayas contain many such ridgelines.

Key Facts

1.Knife-edge ridges are shaped by glacier erosion
2.They are also called arêtes
3.They can be hazardous for climbers

YouTube Angle

Suggested video title for this topic:

"The razor-thin ridges carved by ice"